ALL-TOP 12V Portable Air Compressor Kit - 7.06CFM Heavy Duty Tire Inflator for Truck, SUV, 4x4 & RV - Max 150PSI Offroad Air Pump - Perfect for Emergency Tire Inflation, Road Trips & Outdoor Adventures

The following is based on 265/75 R16 BF Goodrich KO2 tires 10 ply rated.I could deflate one tire from 40 psi to 20 psi in 28 seconds with my ARB valve core removing deflation tool. Then, I could reinflate the tire from 20 psi to 40 psi in 1 minute and 36 seconds with this All Top compressor. I see no need for two or four tire inflation systems at this rate and simplicity. I simply do not 4wheel enough to carry that extra bulk. The analog gauge on the All Top matched the analog gauge on the ARB deflator. I also used a traditional tire gauge and it also matched the other two so accuracy seems reliable.The build quality of this pump is high. The heavy duty rubber pressure hose has a high quality feel and is more than enough to reach the most distant tire on my Toyota Tacoma Double Cab Short Bed pickup. The power switch has a built in dust cover. The pump fills the tires so fast, worrying about overheating etc. is unnecessary. Ambient temp was 95 F when filled 2 tires for my test and the pump was warm (this is the normal operation condition) but far from hot. All supplied items in the zippered case weigh 19.4 pounds. It is not light, odd that this is part of the star rating, to me it indicates a robust build and I did not lower its rating for this. This is not a light duty compressor for a commuter car. It would work but would be overkill! The kit came with an adapter to downsize the output connector to a 1/4 inch connector (common for other air tools and hoses) so versatility is included. Also, the end of the pressure hose is a twist on connector for the tire valve but there is another adapter that fits on this and makes it a quick connect/release to the valve stem. The quick release adapter stayed in place without fail and sealed appropriately. The battery terminal clamps are robust and feel like they would last forever. This is my first high quality air compressor and it has impressed me with its quality and speed. I would highly recommend this as it seems like a sweet spot for quality VS price. Hope this was helpful!